Coal-crusher



(No Model.) 2 Sh'eets3heet 1.

S. EVANS 8: F. J. MORGAN.

GOAL ORUSHER.

N0.q559,272. PatentedApr. 28,1896.

Fig.1 I

WITNESSES: INVENT RS ATTORNEYS.

(No Model.) 2 Sheets-Sheet 2.

s. EVANS & F. J. MORGAN.

COAL 01111311511. I

'No.559,27Z. Pat'entedApi.28;1896.

2 E9511 a? ATTORNEYS.

ANDREW IGRMIAMJPIOTWLITNQWA$HINFIDM D11 T aZZ. whom it may 00771067771;

Be it known that we, SAMUELEVANS and; FRANCIS J MORGAN, of Elkhorn, in the county 1 of McDowell and State of \Vest Virginiafliave invented a new and Improved GOaLOrusher, ofwhich the following is a full, clear, and

' NIT-ED STATES \ATIEN T OFFICE.

COAL-CRUSHER..

srncrrrcArron forming part of Letters Patent No. 559,272, osted April 28, 1896. Application filed November 22, 1895 Serial No. 569,800. (No model.)

exact description.

The object of the invention is to provide a new and improved coal-crusher which is simdiamond-pointed ribs and the cutting-roll be ing provided with transverse ratchet-ribs, the ribs of the two rolls being inclined to the axis of the rolls and disposed in opposite directions relative to each other.

The invention also consists of certain parts:

and details and combinations of the same, as will be fully described hereinafter, and then pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification,

in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a plan View of the improvement with the casing removed. Fig. 2 is asectional side elevation of the improvement on the line 2 2 of Fig. l and with part of the casing broken out. Fig. 3 is an end view of the same with parts of the casing broken out. Fig. 4

is an enlarged side elevation of part of the rolls and table, and Fig. 5 is a cross-section of the same.

The improved coal-crusher is provided with a feeding and crushing roll A and a cuttingroll B, adapted to rotate toward each other and at a differentrate of speed for the purpose hereinafter more fully described. The

rolls A and B are secured on transversely extending shafts O and D, respectively, journaled in bearings E, supported on plates F, attached to beams Gr held on suitable foun- .dations I I, as .is plainly shown in the drawings, said foundations being placed suitable adistances apart'lto form a delivery space and chute H for carrying off the crushed material.

On one end of the shaft 0 is secured a pulley 0, connected by a belt with suitable machinery for imparting a comparatively slow rotary motion to said shaft 0 and the roll A in the direction of the arrow at. The shaft D of the other roll, B, is likewise provided at one end with a pulley D, smaller than the pulley O, and likewise connected with suitable machinery for imparting rotary motion to the shaft D and roll B in the direction of the arrow 19 and at a higher rate of speed than that given to the roll A. The ends of the shafts O and D next to the pulleys O and D are j ournaled in bearings E by ball-andsocket joints, as indicated in Fig. 1, so that the shafts can slightly swing, for the purpose hereinafter more fully described.

The roll A is provided on its periphery with segmental sections A, fastened by bolts or other means to the rim of the roll, and the said sections A are formed on their surfaces with transverselyextending ribs A made diamond-shaped, as is plainly indicated in Fig. 4, the ribs extending transversely, but at a slight inclination relative to the axis of the roll. (See Fig. 1.) The other roll 13 is also formed with segmental sections'B', attached to the rim of the roll, and each sec tion is formed on its outer face with transversely-extending ribs B made ratchet shape, with the cutting edges in the direction of the travel of the roll. (See the arrow 1) in Fig. 4:.) The ribs 13 stand at an angle to the axis of the roll B and in an opposite direction to the ribs A as will be readily understood by reference to Fig. 1.

' Between the two rolls A and B at their lower ends isarranged a table I, having its sides segmental, withthe axis of the rolls as a center of curvature. The side of the table I next to the roll A is formed with transverselyextending ribs 1, made ratchet shape and. similar to the ribs of the. roll B, and on the side of the table I next to the roll Bare formed transversely-extending ribs 1 made diamond shape, similar to the ribs A of the other roll A. The cutting edges of the ribs I extend upwardly-that is, in an inverse direction to the cutting edges of the ribs B as will be readily understood by reference to Fig. 4.

The rolls are preferably inclosed in a casin g J, made of sheet metal or other suitable material, and formed at its top near the middle with a hopper J through which the coal to be crushed is introduced, so as to pass between the rolls A and B, revolving in the direction of the arrows a and b, as previously mentioned, and shown in Figs. 2 and 4:.

Now when the machine is in motion the ribs A of the crushing-roll A, on account of their peculiar form, produce a feeding of and a crushing action on the material, while the ribs B of the roll B insure a cutting action on the material, it being understood that the coal passing between the two ribs A B is held therein at the time the cutting edges of the ribs B of the faster revolving roll B pass the said material, said ribs at the same time tending to crush the material contained in the adjacent ribs A By this arrangement the material is fed, cut, and crushed by the two rolls and a clogging of the material in the ribs of either of the rolls is entirely prevented, as the material will readily drop out of the ribs B as well as out of the ribs A owing to their peculiar form and by reason of the movement of the rolls. The material thus crushed and out passes upon the sides of the table I, to be again subjected to a crushing or cutting action of the ribs A I and B 1 The table I is held vertically adjustable, so that the sides of the table can be brought nearer to or farther from the peripheral surfaces of the rolls A and B and permit of reducing the material to a liner or coarser state, as desired.

In order to prevent breaking of the ribs A and B by pieces of iron or other similar material passing between the rolls with the material, the following device is provided: The

' bearings E for the rolls are set on rollers K held on the top of the plates F, as is plainly shown in Fig. 2, to permit the bearings E to slide longitudinally and move the rolls A and B apart in case a piece of iron passes between the rolls, it being understood that the shafts C and D are free to swing, as previously mentioned, owing to their ball-and-socket joints, in the bearings E. The bearings E are normally held in the proper position and are prevented from sliding outwardly on the rollers K by shells L, made of fragile material and placed on the outer ends of the bearings, the shells abutting on screws N, screwing in the plates F. Now when a piece of iron passes between the two rolls A and B, then the latter are forced apart and the shells L break, and consequently the bearings E are free to slide outward to permit the piece of iron to freely pass through the widened space between the rolls A and B.

Having thus fully described our invention, we claim as new and desire to secure by Letters Patent- 1. A coal-crusher, comprising a crushingroll, a cutting-roll, the said crushing-roll being provided on its periphery with transverse diamond-pointed ribs, and the said cuttingroll being formed with ratchet-ribs, the ribs standing at an angle to the axis of their rolls and in opposite directions relatively to each other, and a table formed with segmental sides adjacent to the peripheries of said rolls, the side next to the crushing-roll being formed with transverse ratchet-shaped ribs, and the side adjacent to the cutting-roll formed with transverse diamond-pointed ribs, substantially as shown and described.

2. A coal-crusher, comprisingafeeding and crushing roll, a cutting-roll driven at a higher rate of speed than the feeding and crushing roll, the latter being provided on its periphery with transverse diamond-pointed ribs, and the cutting-roll being formed with ratchetribs, the ribs standing at an angle to the axis of their rolls and in opposite directions relative to each other, and a table formed with segmental sides adjacent to the peripheries of said rolls, the side next to the feeding and crushing roll being formed with transverse ribs made ratchet shape, and the side adj accnt to the cutting-roll formed with transverse diamond-pointed ribs, substantially as shown and described.

3. A coal-crusher, comprising a feeding and crushing roll, a cutting-roll driven at a higher rate of speed than the feeding and crushing roll, the latter being provided on its periphery with transverse diamond-pointed ribs,and the cutting-roll being formed with ratchet-ribs, the said ribs standing at an angle to the axis of their rolls and in opposite directions relative to each other, a table formed with segmental sides adjacent to the peripheries of said rolls, the side next to the feeding and crushing roll being formed with transverse ribs made ratchet shape, and the side ad jacent to the cutting-roll formed with transverse dianiond-pointed ribs, and means for adjusting said table Vertically, to bring the side nearer to or farther from the peripherally-ribbed surfaces of said rolls, substantially as shown and described.

SAMUEL EVANS.

FRANCIS J. MORGAN.

WVitnesses as to Samuel Evans:

HENRY O. FLESHER, EDWARD H. EVANS.

Witnesses as to F. J. Morgan:

T. E. B. HARTsooK, D. I, BACHMAN. 

